LBO (Local Breakout), is one of roaming architectures used while the mobile device is roaming outside its home network.

In the LBO architecture, when a mobile device initiates a data session, the data traffic is routed directly to the internet through a local breakout point within the visited network. The data traffic bypasses the home network and is sent directly to the internet, avoiding backhauling to the home network's core infrastructure.

This approach reduces latency and optimizes network resources by avoiding unnecessary traffic backhaul.